BEng Civil Engineering; 8 years in project management.

Marcus Laurent

Contributor, Construction & Everyday Life

0 calculators 0 articles Member since Jun 2026

About

Marcus focuses on the "practical math" calculators: home projects, construction, fuel, and travel. His goal is simple — give the reader a number they can actually use on site or on the road in under 30 seconds.

Before writing full-time, he spent eight years in infrastructure and residential construction project management.

Areas of expertise

Construction math Home projects Travel planning Fuel economy

Education & credentials

BEng Civil Engineering — Polytechnique Montréal

Everyday Life

Attic Ventilation Area Calculator

Compute the required net free vent area (NFA) for an attic using either the 1-to-150 ratio (no vapor barrier) or the 1-t...

basic

6,685 4.6 1 min

Everyday Life

Ceiling Fan Blade Span by Room Area Calculator

Recommend a ceiling-fan blade span (sweep diameter) appropriate for a room's floor area, using ENERGY STAR / ASHRAE-styl...

basic

19,606 4.7 1 min

Construction / Materials

Sand Calculator

Compute the volume and approximate weight of sand needed to fill a rectangular area to a chosen depth.

basic

2,990 4.1 1 min

Statistics / Probability

Pearson Chi-Square from Contingency Table Calculator

Calculates χ² = Σ(O−E)²/E from observed and expected frequencies in up to a 4-cell (2×2) contingency table, and indicate...

basic

808 4.0 1 min

Sports

Soccer Shot Conversion Rate Calculator

Compute a player's or team's shot conversion rate over a defined window: conversion_rate = goals / shots. Top-flight str...

basic

2,633 4.2 1 min

Everyday Life

Microwave Time Power Conversion Calculator

Adjust a recipe's microwave time when your microwave's wattage differs from the wattage the recipe was written for: t_ne...

basic

11,863 3.9 1 min

Conversions / Temperature

Temperature Converter

Convert between Celsius, Fahrenheit, and Kelvin.

basic

10,332 4.6 1 min

Statistics

Weibull Shape-Scale Reliability Calculator

Calculates Weibull reliability R(t), failure probability, hazard rate, and MTTF from shape parameter β and scale paramet...

basic

24,985 4.6 1 min

Sports

Basketball Effective Field Goal Percentage Calculator

Compute the effective field goal percentage of a basketball player or team — FG% adjusted to credit the extra value of t...

basic

21,504 4.1 1 min

Sports

Golf Course Handicap Calculator

Compute the World Handicap System course handicap from a player's handicap index, the tees' slope rating, the course rat...

basic

16,864 4.2 1 min

Sports

Board Game Time Per Player Calculator

Estimate the total play time of a board game from a base setup time, an additional minutes-per-player factor, and an opt...

basic

3,848 4.5 1 min

Food / Cooking

Dough Hydration Calculator

Compute baker's percentage hydration of a bread dough from the flour and water weights, plus the recommended water for a...

basic

16,235 4.0 1 min

Showing 25 to 36 of 359 results

guide Conversions

Unit Conversion Without Typos: A Field Guide

Most unit-conversion mistakes are dumb mistakes — swapped factors, dropped decimals, wrong direction. A short guide to not making them.

Marcus Laurent

Mar 10, 2026 3 min

tutorial Fitness

Running Pace: How to Read Splits Without Getting Lost

Pace, splits, and goal times talk about the same thing from three different angles. A short guide to keeping them straight mid-race.

Marcus Laurent

Jan 30, 2026 3 min

Calcify

Browse categories

Marcus Laurent

Attic Ventilation Area Calculator

Ceiling Fan Blade Span by Room Area Calculator

Sand Calculator

Pearson Chi-Square from Contingency Table Calculator

Soccer Shot Conversion Rate Calculator

Microwave Time Power Conversion Calculator

Temperature Converter

Weibull Shape-Scale Reliability Calculator

Basketball Effective Field Goal Percentage Calculator

Golf Course Handicap Calculator

Board Game Time Per Player Calculator

Dough Hydration Calculator

Unit Conversion Without Typos: A Field Guide

Running Pace: How to Read Splits Without Getting Lost